JP6187485B2 - Total heat exchange ventilator - Google Patents

Description

  The present invention relates to a total heat exchange ventilator including a total heat exchange element that performs both latent heat exchange and sensible heat exchange.

  As a prior art, for example, as described in Patent Documents 1 and 2, a total heat exchange ventilator including a total heat exchange element is known. Total heat exchange elements require regular maintenance work including cleaning and the like. For this reason, in the prior art, for example, by using a rail structure or the like to support the total heat exchange element, a configuration in which the total heat exchange element can be pulled out in one direction from the casing of the total heat exchange ventilator and removed. Adopted.

Japanese Patent No. 5063451 JP-A-63-194192

  However, in the prior art described in Patent Documents 1 and 2 described above, air leakage is likely to occur in the gap between the casing and the element that should be shielded, so that high ventilation performance is realized. There is a problem that it is difficult. On the other hand, when the gap is narrowed in order to suppress air leakage, there is a problem that the total heat exchange element becomes difficult to pull out from the casing, and the maintainability is lowered. That is, in the configuration of the conventional technique, it is difficult to achieve both suppression of air leakage and ease of drawing out the total heat exchange element.

  The present invention has been made to solve the above-described problems, and can improve the ventilation efficiency by enhancing the hermeticity of the casing during normal operation, and the total heat exchange element can be installed in the casing. An object of the present invention is to provide a total heat exchange ventilator capable of reducing the sliding resistance when being drawn out and improving the workability during maintenance.

A total heat exchange ventilator according to the present invention includes a casing that constitutes an outer shell, a total heat exchange element that is disposed inside the casing and has a function of exchanging sensible heat and latent heat, and a wall surface of the casing for total heat exchange. In order to ensure the airtightness of the air passage formed between the element and the seal member that seals between the wall surface of the casing and the total heat exchange element, and a drawer that pulls out the total heat exchange element to the outside of the casing When performing the work, the sliding mechanism that can slide the total heat exchange element inside the housing, and when performing the drawing work, the surface pressure of the seal member is compared to when the drawing work is not performed. a surface pressure changing means for reducing, Ru comprising a. The surface pressure changing means is provided at a lower part of the total heat exchange element, and includes an elastic structure having elasticity and a sealing control body disposed so as to be inserted into and removed from the lower side of the elastic structure. The total heat exchange ventilator according to the present invention maintains the surface pressure of the seal member by pressing the total heat exchange element upward by the sealing controller inserted below the elastic structure when the drawing work is not performed. When performing the drawing operation, the sealing control body is taken out from the lower side of the elastic structure to reduce the surface pressure of the sealing member .

  According to the present invention, during normal operation, the surface pressure of the seal member can be maintained at a specified value by the surface pressure changing means, and the total heat exchange ventilator can be operated with high ventilation efficiency. On the other hand, when performing the drawing operation of the total heat exchange element, the surface pressure of the seal member can be reduced by the surface pressure changing means, and the total heat exchange element can be slid out with a small force and pulled out from the housing. Therefore, it is possible to achieve both ventilation efficiency during normal operation and workability during maintenance, and a highly convenient total heat exchange ventilator can be realized.

In Embodiment 1 of this invention, it is a longitudinal cross-sectional view which shows a total heat exchange ventilation apparatus schematically. It is sectional drawing which fractured | ruptured the total heat exchange ventilation apparatus in the position of plane AA in FIG. 1, and was seen from the left side. It is a principal part expanded sectional view in FIG. 1 which shows the element frame arrange | positioned at the upper part of a total heat exchange element, and its periphery structure. It is a principal part expanded sectional view in FIG. 1 which shows the element frame arrange | positioned in the right side part of a total heat exchange element, and its periphery structure. It is a principal part expanded sectional view in FIG. 1 which shows the element flame | frame, sealing structure, etc. which are arrange | positioned under the total heat exchange element. It is the perspective view which looked at the sealing structure in FIG. It is a principal part expanded sectional view similar to FIG. 5 which shows the state which hold | maintained the total heat exchange element in the sealing position. It is a principal part expanded sectional view similar to FIG. 3 which shows the state as which the sealing position was selected. It is a principal part expanded sectional view similar to FIG. 4 which shows the state by which the sealing position was selected.

Embodiment 1 FIG.
The first embodiment of the present invention will be described below with reference to FIGS. In each drawing used in this specification, common elements are denoted by the same reference numerals, and redundant description is omitted. Further, the present invention is not limited to the following embodiments, and can be variously modified without departing from the gist of the present invention.

  FIG. 1 is a longitudinal sectional view schematically showing a total heat exchange ventilator in Embodiment 1 of the present invention. In addition, this figure has shown the state at the time of heat exchange ventilation. In the total heat exchange ventilator, a portion on the right side of the plane AA in FIG. 1 is disposed on the indoor side, and a portion on the left side of the plane AA is disposed on the outdoor side. FIG. 2 is a cross-sectional view of the total heat exchange ventilator as seen from the left side, broken at the position of the plane AA in FIG.

  As shown in FIGS. 1 and 2, the total heat exchange ventilator 1 of the present embodiment includes a casing 2, an air supply fan unit 3, an exhaust fan unit 4, a control unit 5, and a total heat exchange element 6. Yes. The housing | casing 2 comprises the outline of the total heat exchange ventilation apparatus 1, and is provided with the upper surface part, the lower surface part, and the side part. Further, the housing 2 is provided with an outdoor air inlet 21, an outdoor air outlet 22, an indoor air inlet 23, and an indoor air outlet 24. Inside the housing 2, an air supply fan unit 3, an exhaust fan unit 4, a control unit 5 and a total heat exchange element 6 are accommodated, and four partition walls 25, 26, 27, and 28 are provided.

  The total heat exchange element 6 exchanges sensible heat and latent heat between room air and outdoor air, and is arranged in the center of the internal space of the housing 2. The space located around the total heat exchange element 6 in the housing 2 is divided into four spaces (first to fourth spaces S1 to S4 described later) by the partition walls 25, 26, 27, and 28. Yes. The partition walls 25 to 28 protrude from the wall surface of the housing 2 to the inside at positions where the spaces S1 to S4 are partitioned. The total heat exchange element 6 is arranged so as to face all four spaces S1 to S4.

  Further, between the total heat exchange element 6 and the partition walls 25, 26, 27, 28, sheet-like seal members 41, 42, 43, 44 that block air flow (leakage) are provided. The sealing members 41 to 44 seal the space between the wall surface of the housing 2 and the total heat exchange element 6 in order to maintain the airtightness of the spaces S1 to S4. More specifically, the seal members 41 and 42 hold the second space S2 in an airtight manner, and the seal members 42 and 43 hold the third space S3 in an airtight manner. Further, the sealing members 43 and 44 hold the first space S1 in an airtight manner, and the sealing members 41 and 44 hold the fourth space S4 in an airtight manner.

  The total heat exchange element 6 includes a heat exchange member 61 having a sensible heat and latent heat exchange function, and element frames 611, 612, 613, and 614, which will be described later, constituting the outline of the total heat exchange element 6. As shown in FIG. 1, the heat exchange member 61 has a quadrangular cross-sectional shape, and extends in a direction perpendicular to the paper surface of FIG. 1 (that is, the vertical direction in FIG. 2). In the following description, the extension direction of the heat exchange member 61 (the vertical direction in FIG. 2) may be referred to as “the length direction of the total heat exchange element 6”.

  The heat exchange member 61 is formed by, for example, alternately stacking a paper partition member having a sheet shape and a paper spacing member bent into a wave shape having a mountain and valley. The two spacing members located on both sides of one partition member are stacked so that the creases are staggered. An air flow path is formed between the partition member and the spacing member adjacent to each other. Further, the two flow paths located on both sides of the one partition member are arranged so as to be orthogonal to each other on a plane along the partition member. When air flows through these flow paths, sensible heat and latent heat are exchanged between the two flow paths located on both sides of the single partition member.

  The outside air inlet 21 opens into a first space S <b> 1 formed between the partition walls 27 and 28 in the housing 2. The first space S <b> 1 is located on the lower left side of the total heat exchange element 6. The outside air inlet 21 sucks outdoor air into the first space S1. The outside air outlet 22 blows air into the room from the second space S2 formed between the partition walls 25 and 26 in the housing 2, and opens to the second space S2. The second space S2 is located on the upper right side of the total heat exchange element 6, and the air supply fan unit 3 for sending the air in the second space S2 from the outside air outlet 22 into the room is accommodated therein. .

  The indoor air inlet 23 opens into a third space S3 formed between the partition walls 26 and 27 in the housing 2. The third space S3 is located on the lower right side of the total heat exchange element 6. The indoor air inlet 23 sucks indoor air into the third space S3. The indoor air outlet 24 blows air out of the fourth space S4 formed between the partition walls 25 and 28 in the housing 2 and opens to the fourth space S4. The fourth space S4 is located on the upper left side of the total heat exchange element 6, and the exhaust fan unit 4 for sending the air in the fourth space S4 from the indoor air outlet 24 to the outside is accommodated therein. . The supply fan unit 3 and the exhaust fan unit 4 are controlled by the control unit 5.

(Basic operation of total heat exchange ventilator)
Next, the basic operation of the total heat exchange ventilator 1 will be described. When the total heat exchange ventilator 1 is in operation, the air supply fan unit 3 and the exhaust fan unit 4 are driven by the control unit 5. When the air supply fan unit 3 is activated, an air supply air passage is formed inside the total heat exchanging ventilator 1 to blow out air sucked from outside the room. As shown by the arrows in FIG. 1, this air supply air path is formed by an outside air inlet 21, a first space S 1, a total heat exchange element 6, a second space S 2, an air supply fan unit 3 and an outside air outlet 22. It is configured. The outdoor air sucked from the outside air inlet 21 is blown into the room from the outside air outlet 22 after flowing through the supply air passage.

  On the other hand, when the exhaust fan unit 4 is activated, an exhaust air passage for sucking indoor air and blowing it out of the room is formed inside the total heat exchange ventilator 1. As shown by the arrows in FIG. 1, this exhaust air passage is composed of the indoor air inlet 23, the third space S 3, the total heat exchange element 6, the fourth space S 4, the exhaust fan unit 4, and the indoor air outlet 24. It is comprised by. The indoor air sucked in from the indoor air inlet 23 is blown out from the indoor air outlet 24 after flowing through the exhaust air passage.

(Support structure for total heat exchange element)
Next, a structure related to support of the total heat exchange element 6 will be described. As shown in FIG. 1, the element frames 611, 612, 613, and 614 of the total heat exchange element 6 are formed by members having a cross-sectional shape such as a substantially Y shape and a substantially V shape, It is fixed to the bottom, left, and right corners. Further, the heat exchange member 61 and the element frames 611 to 614 extend in the length direction of the total heat exchange element 6 as shown in FIG.

  FIG. 3 is an enlarged cross-sectional view of a main part in FIG. 1 showing an element frame disposed on the upper part of the total heat exchange element and its peripheral structure. As shown in this figure, for example, a pair of partition walls 25 are provided on the upper surface of the housing 2. The two partition walls 25 are opposed to each other in a direction orthogonal to the length direction while extending in the length direction of the total heat exchange element 6. Further, the front end side of each partition wall 25 is bent in an L shape to constitute a housing rail portion 231 extending in the horizontal direction. These housing rail portions 231 have a rail structure extending in parallel to the length direction of the total heat exchange element 6.

  On the other hand, an element frame 611 formed in an inverted Y shape is fixed to the upper corner of the total heat exchange element 6. A pair of element slide parts 631 is provided at the upper end of the element frame 611. These element slide parts 631 protrude horizontally from the center part of the element frame 611 toward the left and right sides. Each element slide portion 631 extends in the length direction of the total heat exchange element 6 and is slidably engaged with each housing rail portion 231 from above. That is, the housing rail part 231 and the element slide part 631 are meshed in the vertical direction. As a result, the total heat exchange element 6 is supported from above by the housing rail part 231 and the element slide part 631.

  Further, when the total heat exchange element 6 is pushed and pulled in the length direction, the element slide portion 631 slides along the housing rail portion 231, so that the total heat exchange element 6 slides in the length direction. . Note that the housing rail portion 231 and the element slide portion 631 constitute a specific example of the slide mechanism in the present embodiment together with a case rail portion 233 and an element slide portion 633 described later. According to the slide mechanism, the total heat exchange element 6 can be moved in the horizontal direction when the drawing operation for pulling out the total heat exchange element 6 to the outside of the housing 2 is performed. Further, the total heat exchange element 6 is configured to be displaced in the vertical direction within the range of play of the slide mechanism.

  In addition, a pair of seal holding portions 632 is provided at the upper end portion of the element frame 611. These seal holding portions 632 protrude horizontally from the main body portion of the element frame 611 toward the left and right sides below the element slide portion 631. In addition, each seal holding portion 632 faces the housing rail portion 231 from the direction opposite to the element slide portion 631 (lower side). A seal member 41 is provided between the seal holding part 632 and the housing rail part 231. 3 illustrates the case where the seal member 41 is provided on the upper surface of the seal holding portion 632, the present invention is not limited to this, and the seal member 41 may be provided on the lower surface of the housing rail portion 231. . FIG. 3 shows a state in which the total heat exchange element 6 is held at a sealing release position to be described later, so that a gap is formed between the casing rail portion 231 and the seal member 41.

  FIG. 4 is an enlarged cross-sectional view of a main part in FIG. 1 showing an element frame arranged in the right part of the total heat exchange element and its peripheral structure. As shown in the figure, a flat partition wall 26 that protrudes horizontally toward the inside of the housing 2 is provided on the right side surface of the housing 2. The partition wall 26 extends in the length direction of the total heat exchange element 6. On the other hand, an element frame 612 formed in a substantially Y shape is fixed to the right corner of the total heat exchange element 6. The element frame 612 is provided with a flat plate-like protruding portion 612 a that protrudes horizontally toward the right side surface portion of the housing 2 and extends in the length direction of the total heat exchange element 6.

  The protruding portion 612a faces the partition wall 26 in the vertical direction, and a seal member 42 is provided between the protruding portion 612a and the partition wall 26. 4 exemplifies the case where the seal member 42 is provided on the upper surface of the protruding portion 612a of the element frame 612. However, the present invention is not limited to this, and the seal member 42 may be provided on the lower surface of the partition wall 26. . FIG. 4 shows a state in which the total heat exchange element 6 is held at the sealing release position, so that a gap is formed between the partition wall 26 and the seal member 42. On the other hand, as shown in FIG. 1, an element frame 614, a protruding portion 614 a, a partition wall 28, and a seal member 44 are also provided on the left side portion of the total heat exchange element 6. It has the same configuration and function as the right side portion of.

(Sealing structure)
Next, with reference to FIG. 5, the structure of the lower part side of the total heat exchange element 6 is demonstrated. FIG. 5 is an enlarged cross-sectional view of a main part in FIG. 1 showing an element frame, a sealing structure, and the like arranged below the total heat exchange element. As shown in this figure, a pair of partition walls 27 projecting vertically toward the inside of the housing 2 are provided on the lower surface of the housing 2. The distal end portions of the partition walls 27 are bent in an L shape toward each other and extend in the horizontal direction to form a housing rail portion 233. Further, the partition wall 27 and the housing rail portion 233 extend in the length direction of the total heat exchange element 6.

  On the other hand, an element frame 613 is fixed to the lower end corner of the total heat exchange element 6. On the lower end side of the element frame 613, an element slide portion 633 having, for example, an H-shaped vertical cross-sectional shape is provided. The element slide portion 633 has an upper end fixed to the element frame 613 and a lower end protruding toward the lower surface of the housing 2 between the partition walls 27 (the housing rail portions 233). The element slide portion 633 includes a flat stopper support surface portion 633a that extends in the horizontal direction, and a flat spring support surface portion 633b that extends in the horizontal direction above the stopper support surface portion 633a.

  A substantially circular insertion hole 633c for inserting the main body 71a of the sealing structure 71 is formed in the stopper support surface portion 633a. The insertion hole 633c has a hole diameter substantially equal to the outer diameter of the main body 71a. Further, the outer edge side of the stopper support surface portion 633a faces the housing rail portion 233 in the vertical direction. That is, the housing rail part 233 and the element slide part 633 are meshed in the vertical direction. According to this configuration, the upper housing rail portion 231 and the element slide portion 631 mesh with each other, and the lower housing rail portion 233 and the element slide portion 633 mesh with each other. It is possible to slide stably while supporting at two points.

  In addition, a seal member 43 is provided on an opposing surface portion between the stopper support surface portion 633 a and the housing rail portion 233. 5 illustrates the case where the seal member 43 is provided on the upper surface of the stopper support surface portion 633a. However, the present invention is not limited to this, and the seal member 43 may be provided on the lower surface of the housing rail portion 233. . FIG. 5 shows a state in which the total heat exchange element 6 is held at the sealing release position, so that a gap is formed between the casing rail portion 233 and the seal member 43. On the other hand, a circular insertion hole 633d for inserting a rod portion 71c described later is formed in the spring support surface portion 633b of the element slide portion 633. The insertion hole 633d has a hole diameter substantially equal to the outer diameter of the rod portion 71c.

  Next, with reference to FIG.5 and FIG.6, the sealing structure 71 with which the total heat exchange ventilation apparatus 1 was provided is demonstrated. FIG. 6 is a perspective view of the sealing structure in FIG. The sealing structure 71 includes a main body 71a, a stopper portion 71b, a rod portion 71c, a spring mounting hole 71d, and the like. The main body 71a is formed in a bottomed cylindrical shape. The stopper portion 71b is configured by a flange portion protruding radially outward from the upper end of the main body 71a. The rod portion 71c is formed in a cylindrical shape, is disposed on the central axis of the main body 71a, and protrudes upward from the main body 71a. The spring mounting holes 71d are holes for mounting the springs 72 to the main body 71A on both radial sides of the rod portion 71c.

  In the sealing structure 71, the main body 71a is inserted into the insertion hole 633c of the element slide portion 633 so as to be displaceable, and the rod portion 71c is inserted into the insertion hole 633d so as to be displaceable. Further, for example, two springs 72 are mounted in a compressed state between the spring mounting hole 71d of the main body 71a and the spring support surface portion 633b. Thereby, the sealing structure 71 is positioned by engaging the stopper portion 71b with the peripheral portion (stopper support surface portion 633a) of the insertion hole 633c in a state where the sealing structure 71 is pressed downward by the spring force of the spring 72. . Further, when the sealing structure 71 is pressed from the lower side with a force stronger than the spring force of the spring 72, the spring 72 is compressed and retracted to the back side (upper side) of the insertion hole 633c. Has been. That is, the sealing structure 71 and the spring 72 function as an elastic structure having elasticity in the lower part of the total heat exchange element 6.

  On the other hand, the sealing structure 71 and the element slide part 633 have a structure in which mutual assemblability is taken into consideration. Specifically, the insertion hole 633c of the element slide portion 633 has a hole diameter that is equal to the outer diameter of the main body 71a of the sealing structure 71 only in a part in the circumferential direction, and the other part has a sealing structure. The hole 71 is wide enough to allow the stopper 71b of the body 71 to pass therethrough. Moreover, the stopper part 71b of the sealing structure 71 is formed only in a part in the circumferential direction as shown in FIG. According to this configuration, when the sealing structure 71 is assembled to the element slide portion 633, first, the sealing structure 71 fitted with the spring 72 is inserted from below into the insertion hole 633c of the stopper support surface portion 633a. Meanwhile, the rod portion 71c is inserted into the insertion hole 633d of the spring support surface portion 633b. At this time, the stopper portion 71b of the sealing structure 71 is inserted into a portion having a large hole diameter in the insertion hole 633c.

  Next, when the stopper portion 71b passes through the insertion hole 633c, the sealing structure 71 is rotated in the circumferential direction to engage the stopper portion 71b with a portion of the insertion hole 633c having a small hole diameter. As a result, the sealing structure 71 is prevented from being inserted into the insertion hole 633c by the stopper portion 71b, and the rod portion 71c is engaged with the insertion hole 633d, thereby suppressing displacement in the radial direction. It will be in the state. Therefore, the sealing structure 71 can be easily assembled to the element slide portion 633.

(Sealing position of total heat exchange element)
Next, the sealing position and the sealing release position of the total heat exchange element 6 will be described. The total heat exchange ventilator 1 of the present embodiment moves the position of the total heat exchange element 6 between the sealing position and the seal release position depending on whether or not the drawing operation of the total heat exchange element 6 is performed. Is configured to change. First, the sealing position will be described with reference to FIGS. FIG. 7 is an enlarged cross-sectional view similar to FIG. 5 showing a state in which the total heat exchange element is held at the sealing position. 8 and 9 are enlarged cross-sectional views of main parts similar to FIGS. 3 and 4 showing a state where the sealing position is selected.

  When the total heat exchanging ventilator 1 is operated in a normal state (when the drawer operation is not performed), as shown in FIG. Thus, the total heat exchange element 6 is held at the sealing position. The sealing control body 73 is a component having a prescribed height dimension, and is inserted below the sealing structure 71 when the drawing operation is not performed. In a state where the sealing control body 73 is inserted, the sealing structure 71 is pushed upward by the sealing control body 73, and the element frame 613 connected to the sealing structure 71 via the spring 72 is further upward. Pushed up. Thereby, the total heat exchange element 6 is displaced upward within the range of play of the slide mechanism (the housing rail parts 231 and 233 and the element slide parts 631 and 633), and is released from being sealed in a state where it is pressed upward. It is held at the sealing position above the position.

  As a result, as shown in FIGS. 7 to 9, the seal members 41, 42, 43, and 44 are elastically in contact with a part of the casing 2 (the casing rail portions 231 and 233 and the partition walls 26 and 28), respectively. It will be in the state. In this state, the surface pressure of the seal members 41 to 44 is maintained at a predetermined value, and the sealability of the spaces S1 to S4 is ensured by the seal members 41 to 44. Therefore, during normal operation, the total heat exchange ventilator 1 can be operated with high ventilation efficiency. Since the operation of the seal member 44 is the same as that of the seal member 42, the illustration thereof is omitted.

(Seal release position of total heat exchange element)
Next, the sealing release position of the total heat exchange element 6 will be described with reference to FIGS. Since the total heat exchange element 6 is likely to be clogged and pressure loss due to dust in the air, it is necessary to clean it regularly. When performing maintenance of the total heat exchange element 6 including such cleaning, a drawing operation is performed in which the total heat exchange element 6 is slid in the length direction by the slide mechanism and pulled out of the housing 2. When performing the drawing operation, first, the sealing control body 73 is pulled out from the lower side of the sealing structure 71 and taken out.

  In the state where the sealing control body 73 is taken out, as shown in FIG. 5, the total heat exchange element 6 is displaced downward within the range of play of the slide mechanism by its own weight, and moves from the sealing position to the sealing release position. . As a result, as shown in FIGS. 3 to 5, the seal members 41, 42, 43, 44 are away from the housing rail portions 231, 233 and the partition walls 26, 28 (that is, the direction in which the surface pressure decreases). Therefore, the surface pressure of the seal members 41 to 44 is lower than when the sealing control body 73 is inserted. In the present embodiment, the case where the seal members 41 to 44 are separated from the housing 2 side is illustrated, but the present invention is not limited to this, and the seal members 41 to 44 are in contact with the housing 2 side. It is good also as a structure which reduces the surface pressure, maintaining.

  Thus, in a state where the total heat exchange element 6 is moved to the sealing release position, the sliding resistance applied to the total heat exchange element 6 from the seal members 41 to 44 can be reduced. As a result, the total heat exchange element 6 can be slid out of the housing 2 with a small force, and the total heat exchange element 6 can be easily maintained. Therefore, according to this Embodiment, the ventilation efficiency 1 at the time of normal operation and the workability | operativity at the time of a maintenance can be made compatible, and the total heat exchange ventilation apparatus 1 with high convenience is realizable.

  Further, in the present embodiment, the seal members 41, 42, 43, and 44 are provided on the structure on the total heat exchange element 6 side (the seal holding portion 632, the protruding portions 612 a and 614 a of the element frames 612 and 614, and the element slide portion 633 The stopper support surface portion 633a) is elastically brought into contact with the structure (case rail portions 231, 233, partition walls 26, 28) on the housing 2 side. That is, the seal members 41 to 44 that are apt to cause irreversible secular change such as permanent deformation are arranged on the total heat exchange element 6 side that is a maintenance target member. Thereby, at the time of a maintenance, the replacement | exchange work of the sealing members 41-44 can be easily performed by pulling out the total heat exchange element 6 from the housing | casing 2, and ventilation performance can be maintained over a long period of time.

  Moreover, in this Embodiment, it is set as the structure which arranges the action direction of the surface pressure of the some sealing members 41, 42, 43, 44 in the same direction (upward). Thereby, at the time of execution of an extraction | draw-out operation | work, the surface pressure of all the sealing members 41-44 can be simultaneously reduced only by displacing the total heat exchange element 6 below. Therefore, the surface pressure of the plurality of seal members 41 to 44 can be easily changed using a simple structure, and the configuration of the total heat exchange ventilator 1 can be simplified.

  Further, in the present embodiment, the slide mechanism is disposed above and below the total heat exchange element 6, and the total heat exchange element 6 is displaced in the vertical direction within the range of play of the slide mechanism, thereby the sealing position and It is set as the structure moved to the sealing cancellation | release position. Thereby, the parts of the surface pressure changing means for changing the surface pressure of the seal members 41 to 44 and the parts of the slide mechanism can be partially shared, and the number of parts of the entire apparatus is reduced and the configuration is simplified. Can be promoted. Further, the displacement mechanism of the total heat exchange element 6 can be easily realized by utilizing the play of the slide mechanism.

  In the present embodiment, a sealing structure 71 and a spring 72 as an elastic structure are provided below the total heat exchange element 6, and whether or not the sealing controller 73 is inserted below the elastic structure. Accordingly, the total heat exchange element 6 is displaced. Thereby, the surface pressure of the sealing members 41 to 44 can be easily changed using a simple structure. Further, when the sealing control body 73 is inserted, the upward force applied to the total heat exchange element 6 by the spring 72 can be appropriately adjusted, and the surface pressure of the seal members 41 to 44 is suppressed from being excessive. Can do.

  In the present embodiment, the element frames 611, 612, 613, 614 and the partition walls 25, 26, 27, 28 are sealed by the seal members 41, 42, 43, 44. The attachment positions of the seal members 41 to 44 can be easily adjusted according to the shapes, dimensions, and the like of 611 to 614 and the partition walls 25 to 28.

  In the first embodiment, the housing rail portions 231 and 233, the element slide portions 631 and 633, the sealing structure 71, the spring 72, and the sealing control body 73 show specific examples of the surface pressure changing means. . In the first embodiment, the elastic structure is configured by the sealing structure 71 and the spring 72. However, the present invention is not limited to this, and the elastic structure is formed by forming the sealing structure from an elastic material. The spring 72 may not be used.

  Moreover, in this invention, it is good also as a structure which provides a wheel in the element slide parts 631 and 633, and engages the element slide parts 631 and 633 and the housing | casing rail parts 231 and 233 via the said wheel. Further, the surfaces of the element slide portions 631 and 633 may be coated with a member having a low friction coefficient. According to these configurations, the sliding resistance of the sliding mechanism can be reduced, and the total heat exchange element 6 can be easily slid with a smaller force.

  Moreover, in the said Embodiment 1, the case where the sealing members 41, 42, 43, and 44 were attached to the structure by the side of the total heat exchange element 6 was illustrated. However, the present invention is not limited to this, and the seal member may be attached to the structure on the housing 2 side and contact the structure on the total heat exchange element 6 side. The seal member may be attached to both the structure on the total heat exchange element 6 side and the structure on the housing 2 side, and both the seal members may be in contact with each other.

  In the first embodiment, the sealing members 41, 42, 43, and 44 are separated from the structure on the housing 2 side (the other structure) at the sealing release position. However, the present invention is not limited to this, and the sealing members 41 to 44 may be brought into contact with the counterpart structure in a state where the surface pressure is lower than the sealing position at the sealing release position.

  In the first embodiment, the surface pressure acting direction of the seal members 41, 42, 43, 44 is set upward, and the total heat exchange element 6 is displaced downward to reduce the surface pressure. . However, the present invention is not limited to this, and a configuration may be adopted in which the surface pressure is lowered by setting the direction of the surface pressure acting on the seal members 41 to 44 downward and displacing the total heat exchange element 6 upward. Furthermore, in the present invention, the displacement direction of the total heat exchange element 6 can be set in any direction other than the vertical direction. In other words, in the present invention, the surface pressure is lowered by setting the direction of surface pressure acting on the seal members 41 to 44 to an arbitrary direction and displacing the total heat exchange element 6 in the direction opposite to the direction of surface pressure. What is necessary is just composition.

DESCRIPTION OF SYMBOLS 1 Total heat exchange ventilation apparatus 2 Housing | casing 3 Supply air fan unit 4 Exhaust fan unit 5 Control part 6 Total heat exchange element 21 Outside air inlet 22 Outside air outlet 23 Indoor air inlet 24 Indoor air outlet 25,26,27, 28 Partitions 41, 42, 43, 44 Seal member 61 Heat exchange member 71 Sealing structure (elastic structure, surface pressure changing means)
71a Main body 71b Stopper portion 71c Rod portion 71d Spring mounting hole 72 Spring (elastic structure, surface pressure changing means)
73 Sealing control body (surface pressure changing means)
231 and 233 Housing rail (slide mechanism, surface pressure changing means)
611, 612, 613, 614 Element frame 612a, 614a Protruding part 631, 633 Element slide part (slide mechanism, surface pressure changing means)
632 Seal holding portion 633a Stopper support surface portion 633b Spring support surface portions 633c, 633d Insertion holes S1, S2, S3, S4 Space (air passage)

Claims (7)

A casing constituting the outer shell,
A total heat exchange element disposed inside the housing and having a sensible heat and latent heat exchange function;
A sealing member for sealing between the wall surface of the housing and the total heat exchange element in order to ensure the sealing of an air passage formed between the wall surface of the housing and the total heat exchange element;
A slide mechanism capable of sliding the total heat exchange element inside the casing when performing a drawing operation to pull out the total heat exchange element to the outside of the casing;
A surface pressure changing means for reducing the surface pressure of the seal member as compared to when the extraction operation is not performed, when performing the extraction operation;
Equipped with a,
The surface pressure changing means is
An elastic structure provided at a lower portion of the total heat exchange element and having elasticity;
A sealing control body disposed so as to be capable of being inserted and removed from the lower side of the elastic structure,
When the drawing operation is not performed, the sealing controller inserted below the elastic structure presses the total heat exchange element upward to hold the surface pressure of the seal member, and executes the drawing operation. Sometimes, the total heat exchange ventilator is configured to take out the sealing control body from the lower side of the elastic structure to reduce the surface pressure of the seal member .   The surface pressure changing means includes a mechanism for displacing the total heat exchange element inside the housing, and when performing the drawing operation, the surface pressure changing means moves the total heat exchange element in a direction in which the surface pressure of the seal member decreases. The total heat exchange ventilator according to claim 1, which is configured to be displaced.   The total heat exchange ventilator according to claim 1, wherein the seal member is configured to elastically contact the structure on the housing side in a state of being attached to the structure on the total heat exchange element side. Between the wall surface of the housing and the total heat exchange element, a plurality of spaces constituting the air path, and a plurality of seal members for individually sealing the plurality of spaces,
The total heat exchange ventilator according to any one of claims 1 to 3, wherein the surface pressure changing means is configured to simultaneously reduce the surface pressure of the sealing members when performing the drawing operation.   The total heat exchange ventilator according to claim 4, wherein the acting direction of the surface pressure of each seal member is aligned in the same direction. The slide mechanism is configured to slide the total heat exchange element in a horizontal direction via a rail portion and a slide portion meshed in the vertical direction when performing the drawing operation,
The surface pressure changing means is configured to reduce the surface pressure of the seal member by displacing the total heat exchange element upward or downward within the range of play of the slide mechanism when performing the drawing operation. The total heat exchange ventilator according to any one of claims 1 to 5. An element frame constituting an outline of the total heat exchange element;
A partition wall protruding inward from the wall surface of the housing at a position that partitions the air path,
The total heat exchange ventilation apparatus according to any one of claims 1 to 6 , wherein the seal member is configured to seal between the element frame and the partition wall.

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